Revert "timers: refactor to use optional chaining"

This reverts commit d8f535b.

PR-URL: nodejs#38245
Reviewed-By: Gerhard Stöbich <[email protected]>
Reviewed-By: Robert Nagy <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Antoine du Hamel <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Zijian Liu <[email protected]>
Reviewed-By: Beth Griggs <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>
Reviewed-By: Rich Trott <[email protected]>

Author: mcollina

lib/timers.js

@@ -171,7 +171,7 @@ ObjectDefineProperty(setTimeout, customPromisify, {
 });
 
 function clearTimeout(timer) {
-  if (timer?._onTimeout) {
+  if (timer && timer._onTimeout) {
     timer._onTimeout = null;
     unenroll(timer);
     return;

lib/timers/promises.js

@@ -53,7 +53,10 @@ function setTimeout(after, value, options = {}) {
         'boolean',
         ref));
   }
-  if (signal?.aborted) {
+  // TODO(@jasnell): If a decision is made that this cannot be backported
+  // to 12.x, then this can be converted to use optional chaining to
+  // simplify the check.
+  if (signal && signal.aborted) {
     return PromiseReject(new AbortError());
   }
   let oncancel;
@@ -95,7 +98,10 @@ function setImmediate(value, options = {}) {
         'boolean',
         ref));
   }
-  if (signal?.aborted) {
+  // TODO(@jasnell): If a decision is made that this cannot be backported
+  // to 12.x, then this can be converted to use optional chaining to
+  // simplify the check.
+  if (signal && signal.aborted) {
     return PromiseReject(new AbortError());
   }
   let oncancel;